Question

Please help, I've been on this topic for an hour

Name the following metal complexes or complex ions: formula name [Fe(NH3).)" [Cu(CN),(4,0)] [Pt(en), ]** x 6 ?

Answer 1

1)For coordination compounds, always name the cation before the anion.
Name the ligands first, in alphabetical order, and then name the metal atom. or ion.  

If cation for example Fe = iron, if anion then fe= ferrate... With their oxidation state in bracket ( )

Also remember to use mono, di, tri......... So on to denote the number of ligands.

a) Fe(nh3)6 ^+3 = hexaammine iron (III)

(ammine is neutral ligand hence the charge on iron 3+)

b)[ Cu(cn)2(h2o)2] = diaquadicyano copper (II)

Oxidation state of copper = x(copper) +(-2) +0(aqua) =0

= +2

C){ Pt(en)3} ^+4 = tris(ethylenediammine) platinum(IV)

(use bis, tris, tetrakis so on when ligand already has di tri in th its name, or use bis,tris... When ligand has more than one binding site)